| Busteni | Cephalonia | Athens | Hyderabad | Del Castilho | Rio de Janeiro | Méier |

Since May 2016, Space Adhyaan in Hyderabad is experimenting zero shadow day. It is now a reference for our collaborative measure on this special day like equator on equinoxes and tropics on solstices.
That is why we use this zero shadow even on this cloudy day in Hyderabad.